Light as a breeze on the skin, our Air Flow Shirt helps keep you cool. It works as hard as a running shirt should, wicking and breathing through high-output endeavors, courtesy of its fast-drying Air Flow mesh fabric (now 100% recycled polyester). Pared-down details include a self-fabric crewneck that won’t bind, newly designed raglan sleeves and minimal seam construction for added comfort and unencumbered mobility. With 15-UPF protection, Polygiene permanent odor control, and colored reflective logos on the chest and center back.